GMC 2500 Performance Air Intake - Wehrli - High Flow Cast Aluminum - Gloss White - 2001-2004. A direct-fit high-flow turbo inlet designed for LB7 6.6L Duramax trucks, this Wehrli cast aluminum intake horn replaces the restrictive OEM turbo mouthpiece to improve airflow into the turbocharger.

Made from precision cast aluminum and finished in gloss white powder coat, this 4" inlet offers a smooth transition to the turbo compressor cover and is intended for use with factory IHI turbos or compatible aftermarket drop-in turbos. It bolts on using supplied hardware and uses an O-ring seal at the turbo face for a reliable connection. The design flows significantly more than stock and is commonly paired with 4" cold air intakes or performance intake systems that use a 4" boot connection. In supported setups and with appropriate tuning or supporting upgrades, some applications have reported measurable gains in spool and horsepower.

Features

• True 4" high-flow cast aluminum intake horn
• Gloss white custom powder coat finish
• O-ring seal at turbocharger face and includes mounting hardware
• Flows substantially more than OEM (factory comparisons available)
• Compatible with stock IHI turbos and many aftermarket drop-in turbos
• Made in USA; bolt-on installation, no permanent modification required
• Fitment note: requires a 4" boot connection on the intake system; not compatible with OEM intake manifolds that have molded non-removable connections

If you have questions or want fitment confirmation, call us directly — we can help verify compatibility and discuss installation or customization. We have two locations offering installation and customization services: Austin, Texas and the Los Angeles, California area. 512-982-9393 (TX) or 562-981-6800 (CA)

If you are considering purchasing multiple items, please contact us for shipping discounts. We install on premises at both locations.

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov